My advice would be to handle the entire process by yourself. It is quite straightforward in my experience. As Sudhir mentioned above, the most important part of the process is to clear the cut off score and there is nothing the lawyer can do to help you there. You just need to know how to clear the cut off score (which is something you can easily figure out by yourself with some basic Google search).
This advice is based on my personal experience (not that I hired a lawyer). I got picked in a November 2019 draw and submitted my application early January. While I handled the process myself, a good friend of mine who got picked and submitted the application at the same time as me had hired a consultant/lawyer in Canada. We stayed constantly in touch throughout the process and traded information with each other.
Based on talking to my friend, I think the only value the lawyer adds is help you verify any document/information before uploading something on PR application website. Other than that, they are of no help for some of the non-trivial aspects of the process like getting police certificate from Indian consulate or recommending the right place to get the fingerprints for FBI police certificate (so fingerprint quality is good). My friend used to consult me for advice on these topics and I in turn looked to movnorth for advice. Also, I found it a bit cumbersome that she did not have access to her own PR application credentials and had to go through the lawyer to check the status, etc.
So honestly, I just don’t think 6500$ (or paying anything at all) for a lawyer for this process is worth it unless you are paranoid that you will get some document wrong and want a second set of eyes. I think most documents are straightforward and there are enough instructions given in the PR website to make the requirements clear.